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(11)

EP 3 374 326 A1

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(43) Date of publication: 19.09.2018 Bulletin 2018/38 (21) Application number: 16801107.0 (22) Date of filing: 11.11.2016

(51) International Patent Classification (IPC):  C04B 28/00(2006.01) C04B 38/02(2006.01) C09K 8/473(2006.01) C09K 8/504(2006.01) C04B 28/26(2006.01) C04B 20/10(2006.01) C09K 8/502(2006.01) C09K 8/516(2006.01) (86) International application number: PCT/US2016/061518 (87) International publication number: WO 2017/083639 (18.05.2017 Gazette 2017/20)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: MA MD (30) Priority: 11.11.2015 US 201562253834 P 10.11.2016 US 201615348491 (71) Applicants: PQ Corporation Malvern, PA 19355-1740 (US) BYK USA Inc. Wallingford, CT 06492 (US)	(72) Inventors: MCDONALD, Michael James Toronto, Ontario M6S4L3 (CA) LI, Xianglian Mississauga, Ontario L5M3W1 (CA) CRAMER, Brett Howard Austin, Texas 78726 (US) SHORT, Kelly Paul Jr. O'Fallon, Missouri 63366 (US) (74) Representative: Stafford, Jonathan Alan Lewis  Marks & Clerk LLP 1 New York Street Manchester M1 4HD Manchester M1 4HD (GB)